nexmon – Rev 1
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/* packet-ipv6.h
* Definitions for IPv6 packet disassembly
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
*
* Copyright 1998 Gerald Combs
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifndef __PACKET_IPV6_H_DEFINED__
#define __PACKET_IPV6_H_DEFINED__
#include <epan/ipv6.h>
#define IPv6_HDR_SIZE 40
#define IPv6_ADDR_SIZE 16
/*
* Definition for internet protocol version 6.
* RFC 2460
*/
struct ws_ip6_hdr {
guint32 ip6_ctl_flow; /* version, class, flow */
guint16 ip6_plen; /* payload length */
guint8 ip6_nxt; /* next header */
guint8 ip6_hlim; /* hop limit */
struct e_in6_addr ip6_src; /* source address */
struct e_in6_addr ip6_dst; /* destination address */
};
/* Offsets of fields within an IPv6 header. */
#define IP6H_CTL 0
#define IP6H_CTL_FLOW 0
#define IP6H_CTL_PLEN 4
#define IP6H_CTL_NXT 6
#define IP6H_CTL_HLIM 7
#define IP6H_CTL_VFC 0
#define IP6H_SRC 8
#define IP6H_DST 24
#define IPV6_FLOWINFO_MASK 0x0fffffff/* flow info (28 bits) */
#define IPV6_FLOWLABEL_MASK 0x000fffff/* flow label (20 bits) */
/*
* Extension Headers
*/
struct ip6_ext {
guchar ip6e_nxt;
guchar ip6e_len;
};
/* Routing header */
struct ip6_rthdr {
guint8 ip6r_nxt; /* next header */
guint8 ip6r_len; /* length in units of 8 octets */
guint8 ip6r_type; /* routing type */
guint8 ip6r_segleft; /* segments left */
/* followed by routing type specific data */
};
/* Type 0 Routing header */
struct ip6_rthdr0 {
guint8 ip6r0_nxt; /* next header */
guint8 ip6r0_len; /* length in units of 8 octets */
guint8 ip6r0_type; /* always zero */
guint8 ip6r0_segleft; /* segments left */
guint8 ip6r0_reserved; /* reserved field */
guint8 ip6r0_slmap[3]; /* strict/loose bit map */
/* followed by up to 127 addresses */
struct e_in6_addr ip6r0_addr[1];
};
/* Fragment header */
struct ip6_frag {
guint8 ip6f_nxt; /* next header */
guint8 ip6f_reserved; /* reserved field */
guint16 ip6f_offlg; /* offset, reserved, and flag */
guint32 ip6f_ident; /* identification */
};
#define IP6F_OFF_MASK 0xfff8 /* mask out offset from _offlg */
#define IP6F_RESERVED_MASK 0x0006 /* reserved bits in ip6f_offlg */
#define IP6F_MORE_FRAG 0x0001 /* more-fragments flag */
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
/* Packet info for IPv6 header and extensions */
typedef struct {
guint32 jumbo_plen;
guint16 ip6_plen;
guint16 frag_off;
gboolean frag_flg;
guint32 frag_ident;
} ipv6_pinfo_t;
ipv6_pinfo_t *p_get_ipv6_pinfo(packet_info *pinfo);
gboolean capture_ipv6(const guchar *, int, int, capture_packet_info_t *cpinfo, const union wtap_pseudo_header *pseudo_header);
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* __PACKET_IPV6_H_DEFINED__ */
/*
* Editor modelines
*
* Local Variables:
* c-basic-offset: 4
* tab-width: 8
* indent-tabs-mode: nil
* End:
*
* ex: set shiftwidth=4 tabstop=8 expandtab:
* :indentSize=4:tabSize=8:noTabs=true:
*/